Improvement in hemmers



E. s. YENTzEn.

Hammers.

NO. 138,064, PatentedApri|22,1i873.

UNITED STATES PATENT OFFICE.

ENOOH S. YENVTZER, OF OTTAWA, ILLINOIS.

IMPROVEMENT IN HEIVIMERS.

Specification forming partv of Letters Patent No. 138,064, dated April 22, 1873; application filed February 11, 1873.

To all whom it may concern:

Be it known that I, ENoeH S.YENTZER, of Ottawa, in the county of La Salle and State of Illinois, have invented a new and Improved Hemmer for Sewing-Machines 5 and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this specication, in which- Figure l is a side elevation of the improved hemmer. Fig. 2 is a front elevation of the same. Fig. 3 is a top view. Fig. 4 is a bottom view of the cloth-turner wit-hout the pressurefoot. Fig. 5 shows the blank of which the cloth-turner is made.

Similar letters of reference indicate corresponding parts in the several figures.

The object of my invention is to locate the point of the cloth turner or hemmer very close to the needle-hole through the pressurefoot, and at the same time connect it to the pressure-foot by means of a spring-shank, which will keep the turner down upon the cloth and prevent its bein glifted with the pressure-foot during the operation of feeding, as will be hereinafter explained.

The following description of my invention will enable others skilled in the art to fully understand it.

In the accompanying drawing, A represents the pressure-foot of a sewing-machine, which I construct without a groove in its bottom, and which is formed on a tubular shank, A', or a shank to suit the different machines, to which a set-screw, a., is applied. B represents the cloth-turner, which I prefer to construct of a single piece of thin metal stamped out as represented by Fig. 5. This turner consists 'of a right and left scroll, thus forming a double scroll out of those portions of metal above the dotted line d" on Fig. 5; also, a narrow vertical rib, d, shown clearly by Figs. l and 2; and, also, a spring-shank, c, on one edge of which a stop, g, is` formed. The front end of the pressure-foot A is slotted and cut away at fi, Fig. 3, so as to form a portion of the needle-hole, and also allow the point of the smallest scroll of the turner B to bebrought up as close as possible to the hole through which the needle passes, and forming a part thereof, and at the same time forming a guide on each side of theu needle0 torhold the cloth in position. The turner is secured to lugs b formed on the tubular shank A' by any suitable means, so that the spring-shank c will lie upon the top of the pressure-foot A when the rib-guide d is not pressed upon the clothplate of a sewing-machine. This rib-guide d is of greater vertical thickness than the pressure-foot; consequently the guide will remain on the cloth during the operation of sewing, notwithstanding the pressure-foot will rise and descend as the varying thicknesses of cloth are fed beneath it.

For the purpose of regulating the pressure of the rib-guide d upon the cloth and adjusting it for the pressure-bars of different sewing-machines, the stop g is employed. and bent up or down more or less, as it is desired to iucrease or diminish the spring-pressure.

It will be seen, by reference to Fig. 3, that the point of the stop g bears on thepressurefoot just in rear of the needle-hole; "A setscrew might be applied to the stop or offset g; but I do not deem it necessary.

Instead of permanently attaching the springshank of the cloth-turner to the heel of the tube A', it may be attached by a stem, h, or other suitable means, which will allow the hemmer to be detached at pleasure.

It will be seen that the point of the turner is so near the needle-hole i that there will be a very short curve in the edge of the hem between the turner and the point where the ncedle penetrates the cloth 5 also, that the turner will not be raised from the cloth when the feed raises the pressure foot; consequently the cloth is properly held to its place while sewing.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The hemmer constructed and operating' as herein specified, supported on the springshank, and adapted for application to the pressure-foot of a sewing-machine, in the manner set forth.

2. The combination of the flexible pressureregulating stop g with the described hemmer and spring-shank and the pressure-foot, inthe manner set forth.

ENOCH S. YENTZER.

Witnesses:

Roer. WILsoN,

G.'A. KELLOGG. 

